No add-ons, no touchscreen, no microphone, Rock Band Uplugged is a Rock Band game with a difference, but it will also appear very familiar if you've played Rock Band 2, as this is essentially a cut down, handheld version of that game that borrows a lot of its soundtrack. The idea of Rock Band Unplugged is to keep each instrument playing by itself, which you do by successfully completing a phase of notes for that instrument. Once you complete a phase, use the shoulder buttons to flip to another instrument and carry on playing. If you miss a note though, the phase restarts and the other instruments won't wait for you, so you'll have to keep an eye on which ones are failing. There are only four notes to worry about (even on Expert), and you use the up, left, triangle and circle buttons to play them, so the buttons you need are always under your thumb. You can use X or down to deploy overdrive, which you might need to help save any failing instruments.